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EP2401040B1 - Device for adjusting the length of a flexible link and use thereof in a comfort housing for a harness strap - Google Patents

Device for adjusting the length of a flexible link and use thereof in a comfort housing for a harness strap Download PDF

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Publication number
EP2401040B1
EP2401040B1 EP10709912A EP10709912A EP2401040B1 EP 2401040 B1 EP2401040 B1 EP 2401040B1 EP 10709912 A EP10709912 A EP 10709912A EP 10709912 A EP10709912 A EP 10709912A EP 2401040 B1 EP2401040 B1 EP 2401040B1
Authority
EP
European Patent Office
Prior art keywords
link
loop
strap
translation
return means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10709912A
Other languages
German (de)
French (fr)
Other versions
EP2401040A1 (en
Inventor
Patrick Vieux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tractel SAS
Original Assignee
Tractel SAS
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Filing date
Publication date
Application filed by Tractel SAS filed Critical Tractel SAS
Publication of EP2401040A1 publication Critical patent/EP2401040A1/en
Application granted granted Critical
Publication of EP2401040B1 publication Critical patent/EP2401040B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0006—Harnesses; Accessories therefor
    • A62B35/0025—Details and accessories
    • A62B35/0031—Belt sorting accessories, e.g. devices keeping the belts in comfortable positions
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/02—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps
    • A44B11/04—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps without movable parts
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0006—Harnesses; Accessories therefor
    • A62B35/0025—Details and accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/30—Coupling devices other than buckles, including length-adjusting fittings or anti-slip devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/31—Plural fasteners having intermediate flaccid connector
    • Y10T24/314—Elastic connector
    • Y10T24/316—Strap connector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/40—Buckles
    • Y10T24/4002—Harness
    • Y10T24/4047—Strap loops and attaching devices

Definitions

  • the present invention relates to a device for adjusting the apparent length of a flexible link. It has various applications particularly in the field of safety and more particularly the restraint of persons or loads against the fall. It can still be applied to stopping moving objects or people: lifelines, restraint nets ... An application to a comfort box for strap, including safety harness, is presented.
  • harnesses In the framework of fall arrest devices for personnel working at height, harnesses are worn which are worn by personnel and connected to lifelines. This type of harness must be adjusted tight enough to prevent it from falling out of the person falling. However, such an adjustment limits the possibilities of movement of the person or causes a gene. So we proposed in the application EP 0 902 710 to implement a harness that is made of a material that has a certain elasticity under low stress but with a limit that in case of stop fall, so under high stress, the harness has a non-elastic behavior allowing a effective restraint. Such a harness therefore has both comfort characteristics by not overly limiting the normal movements of the person and safety by having a favorable stop fall behavior.
  • This type of harness however has some disadvantages. For example, in the case where elastic materials are used in the harness, there may be a degradation of the mechanical properties over time even in the absence of excessive stress due to physico-chemical processes of aging. In addition, this type of harness is more complex and expensive to perform than a conventional harness made of a material with no elastic properties.
  • the invention relates to a mechanical device that adjusts the apparent length of a flexible link
  • said link can be cylindrical as a halyard or can be flat as a strap.
  • the link passes through the device by making at least one loop which may be more or less extended depending on the traction exerted on the link, a return means tending to increase the extent of the loop and thus reduce the apparent length.
  • link in the absence of traction on said link, being implemented.
  • the link with the device of the invention exhibits an at least elongation behavior, and preferably a generally elastic, apparent behavior, whereas the link itself may have no characteristic of intrinsic extensibility or elasticity. .
  • the link does not have its own property of elasticity and is practically inextensible.
  • the invention is particularly interesting in security applications.
  • the invention relates to a device for adjusting the length of a flexible link according to the traction exerted on said link, said continuous link passing through the device between two substantially opposite input / output ends of said device.
  • the device comprises means for producing at least one link loop whose extent may vary according to the traction, at least one return means tending to increase the extent of said loop to a maximum predefined in the absence of traction on said link and which corresponds to a decrease in the apparent length of the link on which the device is placed, the traction of the link causing a decrease in the extent of the loop to a predefined minimum and which corresponds to an extension of the apparent length of the link on which the device is placed.
  • the invention also relates to an application of the device of the invention to the production of a comfort box for harness strap, especially for safety.
  • the invention applies in particular to a harness worn by a user, said harness may include straps, including straps, on which adjustment devices are placed. Harnesses are classic harnesses such as baby harnesses, for airplane or boat pilots, for motorists or heavy vehicles, for animals, etc. or safety harnesses, especially anti-falls.
  • Harnesses are classic harnesses such as baby harnesses, for airplane or boat pilots, for motorists or heavy vehicles, for animals, etc. or safety harnesses, especially anti-falls.
  • the invention also applies to a link connected to a user provided with a harness or other means of contention (for example a lifeline-type link, dog leash, etc.), an adjustment device being placed on said link.
  • the invention finally relates to a strap harness, such that at least one of the straps comprises a link length adjustment device according to one or more of the features described, said device being in a housing (the device is said to "Comfort box"), and comprising means for producing at least one strap loop whose extent may vary depending on the traction on the strap, at least one biasing means tending to increase the extent of said loop up to to a predetermined maximum in the absence of traction on said strap and which corresponds to a decrease in the apparent length of the strap on which the device is placed, the traction of the strap resulting in a decrease in the extent of the loop to a predefined minimum and which corresponds to an extension of the apparent length of the strap on which the device is placed.
  • the comfort box of the first example internally comprises an S-loop of the strap and in the second example, an omega loop.
  • the comfort box of the first example internally comprises an S-loop of the strap and in the second example, an omega loop.
  • 10 fixed markings black lines are shown in the strap on either side of the comfort box to show the effect of traction and relaxation (rest / absence of traction) on said strap.
  • the comfort box for harness strap which will more particularly be described in detail below, provides at least one elongation feature to the strap that uses it to ensure the wearer of the harness comfort of use.
  • the comfort box can be positioned on the straps straps to ensure freedom of movement of the upper body. More generally, the comfort box can also be positioned at any other place on a harness strap that can improve the comfort of use of a harness.
  • the comfort box can be placed in line on a strap of a given width and no injurious intervention is necessary to place the case on the strap. In particular, the strap does not need to be cut or otherwise modified. The installation of the comfort box does not alter the original strength of the strap.
  • the elongation effect provided by the implementation of the comfort box is obtained by the combination of a strap trajectory related to bypassing the deflection axis (s). mobile (s) and / or fixed and a possible reaction plate according to the adopted loop configuration (S or omega) and on which mobile deflection axes are hooked springs which, when pulling on the strap tending to reduce the extent of the loop, give rise to a booster reaction.
  • the housing itself is there only to maintain all the parts in position and allow guiding and then blocking the translation of the axis (s) of deflection at the end of the race.
  • the comfort box preferably additionally provides an apparent shortening effect (after the extension) of the link / strap when traction ceases.
  • the comfort box comes in two particular configurations depending on the loop configuration adopted: S or omega.
  • the continuous strap is passed into the comfort housing and has an upstream portion 1 and a downstream portion 2 relative to the housing 3.
  • the upstream and downstream qualifiers are here purely arbitrary and given for ease of explanation.
  • the upstream portion 1 of the strap penetrates into the casing through an inlet / outlet end of the casing, in this case upstream 9, and will wrap about one-half turn around an axis of fixed deflection 6 (not mobile in translation but which is preferably rotatable) after passing through most of the housing, then, the strap will wrap around 180 ° about a movable deflection axis 5 in translation after having returned to the upstream input / output end of the housing, then the strap will emerge through the other input / output end of the housing, in this case downstream 10, to form the downstream part 2 of the strap.
  • the fixed deflection axis 6 is rotatable, this can also be the case for the translational deflection axis 5.
  • the Figure 3 allows to better see the structure of the comfort housing which is made of two parts coming to fit and snap into each other and having internally the deflection axes, fixed 6 and movable in translation 5.
  • This last axis 5 is guided at both ends in parallel grooves (or lumens), a pair of grooves, opposite walls of the housing.
  • the springs 7 are extended between the attachment structures of the housing and the axially movable axis 5.
  • the strap has a substantially constant width over its entire length, in particular to avoid any problems of deflection, folds or reversals of the strap that may hinder the operation of the comfort housing for example in the case of non-axial traction on the strap.
  • the passage openings of the link at the input / output ends are adjusted to the size (width and thickness for a strap and diameter for a cable) of the link and the deflection axes may comprise lateral shoulders or grooves.
  • a strap for a safety harness has a width of about 45 mm.
  • the two strap deflection axes are movable in translation.
  • the corresponding device is represented on the Figures 6 to 10 .
  • the continuous strap is passed into the comfort box and has an upstream portion 1 and a downstream portion 2 relative to the housing 3.
  • the qualifiers upstream and downstream are here purely arbitrary and given to facilitate explanations .
  • the upstream portion 1 of the strap penetrates the housing through an inlet / outlet end of the housing, in this case upstream 9, and will wrap about a half turn around a first axis of deflection movable in translation 5, then, the strap will wrap about 180 ° around a first end of a reaction plate 8 and then wrap about 180 ° around the second end of said reaction plate 8 to then wrap around about a half turn around a second deflection axis 5 'movable in translation then the strap will emerge through the other end of the inlet / outlet of the housing, in this case downstream 10 , to form the downstream part 2 of the strap.
  • the translationally movable deflection axes 5, 5 ' are also rotatable.
  • the main function of the support plate 8 is to provide at both ends means for deflecting the path of the strap, said plate can be replaced for example by two other omega deflection axes, fixed , willing to locations of the ends of the reaction plate.
  • the small thickness of the reaction plate makes it more difficult for the strap to slide and thus the possibilities of displacement of the comfort box along the strap, and it is therefore possible to use such a reaction plate if the it is desired to make it more difficult to move the comfort box.
  • a means is used to immobilize totally or to a certain extent the comfort box with respect to the strap to prevent it from moving (too much) and can finally be positioned in locations troublesome for the wearer of the harness.
  • the housing is typically made of two shells assembled together.
  • one of the shells forms the greater part of the housing 3 and the other shell then forms a cover 4.
  • the structure of the housing with omega loop is better visible on the Figure 8 with its two parts coming to fit and snap into each other and internally with the axes of translational deflections in translation 5 and 5 'and the reaction plate 8.
  • the deflection axes 5 and 5' movable in translation are guided at both ends in two pairs of grooves parallel to each other in opposite walls of the housing.
  • the springs 7 are extended between the deflection axes movable in translation 5 and 5 '.
  • the considered link which is a strap in this case goes out on each side of the device.
  • one end of the link may be fixed to the device and the device may include a specific attachment means (hook, sealing lug, screw-on lug, carabiner ...) thereby making it possible to exert traction on the link.
  • a state of rest of the device has been mentioned as corresponding to a loop range maximum in the absence of traction on the link. It is understood, however, that in some applications the link is normally in tension (the extent of the loop is then reduced) and that the device then serves to compensate (reduce the apparent length of the link) a decrease in the link voltage.
  • the tension on the link is normally such that the extent of the loop is between the minimum and maximum extent of the loop, and it is then possible to compensate in both directions for the apparent length of the loop. link depending on whether the voltage is increased or reduced.
  • the deflection axes fixed (including omega) or mobile, may or may not rotate in the embodiment according to the embodiment.
  • the housing does not have a sharp edge externally because it is in contact with the user.
  • a comfort box is disposed on each of the straps harness straps, in the back of the user. Preferably, it implements a means of immobilization of the comfort box along the strap so that the latter does not move (too much) along the strap during use of the harness.
  • the straps of the harness are preferably inextensible (in a non-elastic material) in this application and the comfort box provides an apparent elasticity to the shoulder straps.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Buckles (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Emergency Lowering Means (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Description

La présente invention concerne un dispositif d'ajustement de la longueur apparente d'un lien souple. Elle a des applications diverses notamment dans le domaine de la sécurité et plus particulièrement de la retenue de personnes ou charges contre la chute. Elle peut encore s'appliquer à l'arrêt d'objets ou personnes en mouvement : lignes de vie, filets de retenue... Une application à un boîtier de confort pour sangle, notamment de harnais de sécurité, est présentée.The present invention relates to a device for adjusting the apparent length of a flexible link. It has various applications particularly in the field of safety and more particularly the restraint of persons or loads against the fall. It can still be applied to stopping moving objects or people: lifelines, restraint nets ... An application to a comfort box for strap, including safety harness, is presented.

Dans le cadre des dispositifs anti-chute pour personnel travaillant en hauteur, on met en oeuvre des harnais qui sont portés par le personnel et reliés à des lignes de vie. Ce type de harnais doit être ajusté suffisamment serré pour éviter qu'il ne se défasse de la personne qui chute. Toutefois, un tel ajustement limite les possibilités de mouvement de la personne ou provoque une gène. On a donc proposé dans la demande EP 0 902 710 de mettre en oeuvre un harnais qui soit réalisé dans une matière qui présente une certaine élasticité sous faible contrainte mais avec une limite qui fait qu'en cas d'arrêt de chute, donc sous contrainte élevée, le harnais ait un comportement non élastique permettant une retenue efficace. Un tel harnais présente donc à la fois des caractéristiques de confort en ne limitant pas outre mesure les mouvements normaux de la personne et de sécurité en ayant un comportement d'arrêt de chute favorable.In the framework of fall arrest devices for personnel working at height, harnesses are worn which are worn by personnel and connected to lifelines. This type of harness must be adjusted tight enough to prevent it from falling out of the person falling. However, such an adjustment limits the possibilities of movement of the person or causes a gene. So we proposed in the application EP 0 902 710 to implement a harness that is made of a material that has a certain elasticity under low stress but with a limit that in case of stop fall, so under high stress, the harness has a non-elastic behavior allowing a effective restraint. Such a harness therefore has both comfort characteristics by not overly limiting the normal movements of the person and safety by having a favorable stop fall behavior.

Ce type de harnais présente toutefois certains inconvénients. Par exemple dans le cas où des matériaux élastiques sont mis en oeuvre dans le harnais, il peut se produire une dégradation des propriétés mécaniques au cours du temps même en l'absence de contrainte excessive du fait de processus physico-chimiques de vieillissement. De plus, ce type de harnais est plus complexe et coûteux à réaliser qu'un harnais classique réalisé dans un matériau ne présentant pas de propriétés élastiques.This type of harness however has some disadvantages. For example, in the case where elastic materials are used in the harness, there may be a degradation of the mechanical properties over time even in the absence of excessive stress due to physico-chemical processes of aging. In addition, this type of harness is more complex and expensive to perform than a conventional harness made of a material with no elastic properties.

On connaît également des dispositifs mécaniques d'ajustement par les demandes DE 2419193 , EP 0 629 530 et US 2004/095004 . Toutefois, ces dispositifs présentent certaines limitations comme notamment l'irréversibilité ou une absence de déplacement d'axes de déflexion.Mechanical adjustment devices are also known by the applications DE 2419193 , EP 0 629 530 and US 2004/095004 . However, these devices have certain limitations such as irreversibility or lack of movement of deflection axes.

Dans sa généralité, l'invention concerne un dispositif mécanique qui permet d'ajuster la longueur apparente d'un lien souple, ledit lien pouvant être cylindrique comme une drisse ou pouvant être plat comme une sangle. Pour cela le lien passe dans le dispositif en faisant au moins une boucle qui peut être plus ou moins étendue en fonction de la traction exercée sur le lien, un moyen de rappel tendant à augmenter l'étendue de la boucle et donc réduire la longueur apparente du lien en l'absence de traction sur ledit lien, étant mis en oeuvre. Il en résulte que le lien avec le dispositif de l'invention présente un comportement au moins d'allongement, et, de préférence globalement élastique, apparent alors que le lien en lui-même peut n'avoir aucune caractéristique d'extensibilité ou d'élasticité intrinsèque. Et même, de préférence, le lien ne présente pas de propriété d'élasticité propre et est pratiquement inextensible. L'invention est particulièrement intéressante dans des applications de sécurité.In general, the invention relates to a mechanical device that adjusts the apparent length of a flexible link, said link can be cylindrical as a halyard or can be flat as a strap. For this, the link passes through the device by making at least one loop which may be more or less extended depending on the traction exerted on the link, a return means tending to increase the extent of the loop and thus reduce the apparent length. link in the absence of traction on said link, being implemented. It As a result, the link with the device of the invention exhibits an at least elongation behavior, and preferably a generally elastic, apparent behavior, whereas the link itself may have no characteristic of intrinsic extensibility or elasticity. . And even, preferably, the link does not have its own property of elasticity and is practically inextensible. The invention is particularly interesting in security applications.

Ainsi, l'invention concerne un dispositif d'ajustement de la longueur d'un lien souple en fonction de la traction exercée sur ledit lien, ledit lien continu traversant le dispositif entre deux extrémités d'entrée/sortie sensiblement opposées dudit dispositif.Thus, the invention relates to a device for adjusting the length of a flexible link according to the traction exerted on said link, said continuous link passing through the device between two substantially opposite input / output ends of said device.

Selon l'invention, le dispositif comporte des moyens pour réaliser au moins une boucle de lien dont l'étendue peut varier en fonction de la traction, au moins un moyen de rappel tendant à augmenter l'étendue de ladite boucle jusqu'à un maximum prédéfini en l'absence de traction sur ledit lien et ce qui correspond à une diminution de la longueur apparente du lien sur lequel est placé le dispositif, la traction du lien entraînant une diminution de l'étendue de la boucle jusqu'à un minimum prédéfini et ce qui correspond à un allongement de la longueur apparente du lien sur lequel est placé le dispositif.According to the invention, the device comprises means for producing at least one link loop whose extent may vary according to the traction, at least one return means tending to increase the extent of said loop to a maximum predefined in the absence of traction on said link and which corresponds to a decrease in the apparent length of the link on which the device is placed, the traction of the link causing a decrease in the extent of the loop to a predefined minimum and which corresponds to an extension of the apparent length of the link on which the device is placed.

Dans divers modes de mise en oeuvre de l'invention, les moyens décrits, pouvant être utilisés seuls ou selon toutes les combinaisons techniquement possibles, sont employés et notamment :

  • le dispositif ne comporte qu'une boucle,
  • la boucle est sensiblement plate,
  • la boucle sensiblement plate s'étend dans un plan sensiblement étendu entre les deux extrémités d'entrée/sortie du dispositif,
  • la boucle est sensiblement plate et s'étend dans un plan sensiblement étendu entre les deux extrémités d'entrée/sortie du dispositif,
  • le lien est un lien textile ou un lien non textile,
  • le lien non textile est métallique, (mono ou multibrins)
  • le lien non textile est dans une matière synthétique, (mono ou multibrins)
  • le lien textile est un tissé ou un non-tissé,
  • le lien est dans une matière synthétique, notamment nylon, polyamide, polyester, etc. ou leurs combinaisons,
  • le lien est dans une matière naturelle, notamment fibres de lin, coton, chanvre, etc. ou leurs combinaisons,
  • le lien est un lien composite,
  • le lien est un lien composite textile et non textile,
  • le lien est un lien composite de tissé et non-tissé,
  • le lien est un lien composite de matières synthétique et naturelle,
  • le lien en lui-même est non élastique lors de sa traction,
  • le lien en lui-même présente un comportement au moins partiellement élastique lors de sa traction,
  • le lien en lui-même présente un comportement élastique en début de traction puis non élastique à la suite,
  • le lien est plat (=sangle),
  • le lien est cylindrique,
  • le lien cylindrique est un toron,
  • dans le cas d'un lien cylindrique, les axes de déflexion comportent des gorges,
  • dans le cas d'un lien cylindrique, les axes de déflexion comportant des gorges sont des poulies,
  • le lien est choisit parmi les liens cylindriques ou les liens plats (=sangles),
  • le lien est plat et la boucle est ouverte,
  • la boucle est ouverte, (de préférence pour un lien plat)
  • la boucle est fermée, (facilement réalisable pour un lien cylindrique pour lequel le désaxement entre les deux extrémités de la boucle est au minimum égal au diamètre du lien)
  • le dispositif comporte par boucle au moins deux axes de déflexion du lien, au moins un des axes étant mobile en translation et étant fonctionnellement solidaire dudit au moins un moyen de rappel,
  • le moyen de rappel est élastique,
  • le moyen de rappel est à mémoire de forme, (par exemple bloc de caoutchouc)
  • le moyen de rappel est à mémoire de dimension,
  • le moyen de rappel est un bloc de matériau élastique,
  • le moyen de rappel est un ressort,
  • le ressort travaille en extension, (au maximum d'étendue de la boucle, le/les ressorts est/sont de longueur réduite, spires approchées, et au minimum d'étendue de la boucle, le/les ressorts est/sont de longueur augmentée, en extension, spires éloignées)
  • le ressort travaille en compression, (au maximum d'étendue de la boucle, le/les ressorts est/sont de longueur augmentée, spires éloignées, et au minimum d'étendue de la boucle, le/les ressorts est/sont de longueur réduite, spires rapprochées)
  • le moyen de rappel est un ressort et le ressort travaille en extension : la traction du lien qui entraîne une diminution de l'étendue de la boucle provoquant une extension du ressort,
  • le moyen de rappel est un ressort et le ressort travaille en compression : la traction du lien qui entraîne une diminution de l'étendue de la boucle provoquant une compression du ressort,
  • chacun des deux axes de déflexion renvoi le lien dans une direction opposée à celle de l'autre axe,
  • au moins un des axes de déflexion est mobile en rotation, (l'axe de déflexion immobilisé en translation et/ou le/les axes de déflexion mobiles en translation)
  • le dispositif comporte une boucle en S, un premier axe de déflexion du lien étant immobilisé en translation et un second axe de déflexion étant mobile en translation et fonctionnellement solidaire dudit au moins un moyen de rappel, le/les moyens de rappels agissant entre un/des points fixes du dispositif et le second axe de déflexion,
  • le dispositif comporte une boucle en oméga, un premier axe de déflexion du lien étant mobile en translation et fonctionnellement solidaire d'un premier dudit au moins un moyen de rappel, et un second axe de déflexion étant mobile en translation et fonctionnellement solidaire d'un second dudit au moins un moyen de rappel, et dans le cas où le premier et le second au moins un moyen de rappel sont indépendants, lesdits moyens de rappel agissent respectivement entre un/des points fixes du dispositif et leur axe de déflexion correspondant, et dans le cas où le premier et le second au moins un moyen de rappel sont un seul et même au moins moyens de rappel, le/lesdits moyens de rappel agissent entre les premier et second axes de déflexion.
  • le dispositif à boucle en oméga, comporte en outre une plaque de réaction ou deux axes de déflexions d'oméga fixes, (les deux extrémités de la plaque de réaction ont la même fonction de renvoi de lien que les deux axes de déflexions d'oméga fixes)
  • l'axe de déflexion mobile en translation l'est le long d'au moins un chemin de translation du dispositif,
  • le dispositif comporte deux chemins de translation parallèles et opposés par axe de déflexion mobile en translation, lesdits chemins de translation recevant les deux extrémités opposées de l'axe de déflexion mobile en translation,
  • le (les) extrémité(s) du chemin de translation correspondant au minimum prédéfini d'étendue de la boucle comporte(nt) une (des) butée(s),
  • le dispositif comporte deux chemins de translation parallèles et opposés par axe de déflexion mobile en translation, lesdits chemins de translation recevant les deux extrémités opposées de l'axe de déflexion afin de permettre la mobilité avec guidage en translation dudit axe de déflexion,
  • le dispositif comporte un boîtier sensiblement plat, la boucle étant disposée à l'intérieur dudit boîtier.
In various embodiments of the invention, the means described, which can be used alone or in any technically possible combination, are employed and in particular:
  • the device has only one loop,
  • the loop is substantially flat,
  • the substantially flat loop extends in a substantially extended plane between the two input / output ends of the device,
  • the loop is substantially flat and extends in a substantially extended plane between the two input / output ends of the device,
  • the link is a textile link or a non-textile link,
  • the non-textile link is metallic, (mono or multi-strand)
  • the non-textile link is in a synthetic material, (mono or multi-strand)
  • the textile link is a woven or a nonwoven,
  • the link is in a synthetic material, in particular nylon, polyamide, polyester, etc. or their combinations,
  • the link is in a natural material, especially flax fiber, cotton, hemp, etc. or their combinations,
  • the link is a composite link,
  • the link is a textile and non-textile composite link,
  • the link is a composite link of woven and nonwoven,
  • the link is a composite link of synthetic and natural materials,
  • the link itself is inelastic when pulled,
  • the link itself exhibits an at least partially elastic behavior during its traction,
  • the link itself exhibits an elastic behavior at the beginning of traction and then inelastic as a result,
  • the link is flat (= strap),
  • the link is cylindrical,
  • the cylindrical link is a strand,
  • in the case of a cylindrical link, the deflection axes comprise grooves,
  • in the case of a cylindrical link, the deflection axes comprising grooves are pulleys,
  • the link is chosen from the cylindrical links or the flat links (= straps),
  • the link is flat and the loop is open,
  • the loop is open, (preferably for a flat link)
  • the loop is closed, (easily achievable for a cylindrical link for which the misalignment between the two ends of the loop is at least equal to the diameter of the link)
  • the device comprises by loop at least two deflection axes of the link, at least one of the axes being mobile in translation and being functionally integral with said at least one return means,
  • the return means is elastic,
  • the return means is of shape memory, (for example rubber block)
  • the return means is memory-sized,
  • the return means is a block of elastic material,
  • the return means is a spring,
  • the spring works in extension, (at the maximum extent of the loop, the springs are / are of reduced length, approximate turns, and at least the extent of the loop, the springs are / are of increased length , in extension, distant turns)
  • the spring is working in compression, (at the maximum extent of the loop, the spring (s) is / are of increased length, remote turns, and at least the extent of the loop, the spring (s) is / are of reduced length , close turns)
  • the return means is a spring and the spring works in extension: the traction of the link which causes a decrease in the extent of the loop causing an extension of the spring,
  • the return means is a spring and the spring works in compression: the traction of the link which causes a decrease in the extent of the loop causing compression of the spring,
  • each of the two deflection axes sends the link in a direction opposite to that of the other axis,
  • at least one of the deflection axes is rotatable, (the deflection axis immobilized in translation and / or the deflection axis movable in translation)
  • the device comprises an S-loop, a first deflection axis of the link being immobilized in translation and a second deflection axis being movable in translation and functionally integral with said at least one return means, the / means of call-backs acting between a / fixed points of the device and the second axis of deflection,
  • the device comprises an omega loop, a first deflection axis of the link being movable in translation and functionally integral with a first of said at least one return means, and a second deflection axis being movable in translation and functionally integral with a second of said at least one return means, and in the case where the first and the second at least one return means are independent, said return means act respectively between a fixed point / points of the device and their corresponding deflection axis, and in the case where the first and the second at least one return means are one and even at least one return means, the / said return means act between the first and second deflection axes.
  • the omega loop device further comprises a reaction plate or two axes of fixed omega deflections, (both ends of the reaction plate have the same link return function as the two omega deflection axes fixed)
  • the deflection axis movable in translation is along at least one translation path of the device,
  • the device comprises two translation paths parallel and opposite by deflection axis movable in translation, said translation paths receiving the two opposite ends of the deflection axis movable in translation,
  • the end (s) of the translation path corresponding to the predefined minimum extent of the loop comprises (s) stop (s),
  • the device comprises two parallel and opposite translation paths per deflection axis movable in translation, said translational paths receiving the two opposite ends of the deflection axis in order to allow mobility with translational guidance of said deflection axis,
  • the device comprises a substantially flat housing, the loop being disposed inside said housing.

L'invention concerne également une application du dispositif de l'invention à la réalisation d'un boîtier de confort pour sangle de harnais, notamment de sécurité.The invention also relates to an application of the device of the invention to the production of a comfort box for harness strap, especially for safety.

Dans diverses variantes, ledit boîtier de confort comporte une ou plusieurs des caractéristiques décrites dont les suivantes :

  • le boîtier est formé d'un cadre et ses faces principales sont essentiellement ouvertes, (boîtier « squelette »)
  • le boîtier est essentiellement fermé, (il présente des parois matérielles sur ses principales faces)
  • le boîtier est en matière rigide,
  • le boîtier est réalisé en matière plastique ou métallique ou composite,
  • le boîtier est constitués de deux coques solidarisées ensembles, notamment par encliquetage et/ou soudage et/ou vissage, chacune des coques formant une des deux faces principales dudit boîtier,
  • au moins une des extrémités d'entrée/sortie du lien est réalisée entre deux bords opposés appartenant respectivement aux deux coques,
  • au moins une des extrémités d'entrée/sortie du lien est réalisée sous forme d'un orifice dans une paroi latérale d'une des deux coques, (orifice de paroi d'extrémité d'entrée/sortie de coque)
  • les dimensions de passage des extrémités d'entrée/sortie du lien sont légèrement supérieures à celles du lien afin de réaliser un guidage dudit lien, (pour éviter que par exemple dans le cas d'un lien plat dont la traction n'est pas-axiale, de faire que des plis ou un enroulement sur lui-même du lien s'engagent dans le dispositif)
  • le boîtier est sensiblement plan,
  • au moins une des faces principales du boîtier est incurvée concave pour adaptation à l'épaule du porteur du harnais,
  • le boîtier de confort est légèrement incurvé pour adaptation à l'épaule du porteur du harnais.
In various embodiments, said comfort box includes one or more of the features described, including:
  • the casing is formed of a frame and its main faces are essentially open, ("skeleton" casing)
  • the case is essentially closed, (it has material walls on its main faces)
  • the case is made of rigid material,
  • the housing is made of plastic or metal or composite material,
  • the housing consists of two shells joined together, in particular by snapping and / or welding and / or screwing, each of the shells forming one of the two main faces of said housing,
  • at least one of the input / output ends of the link is formed between two opposite edges belonging respectively to the two shells,
  • at least one of the input / output ends of the link is formed as an orifice in a sidewall of one of the two shells, (shell inlet / outlet end wall port)
  • the passage dimensions of the input / output ends of the link are slightly greater than those of the link in order to carry out a guide of said link, (to prevent, for example, in the case of a flat link whose traction is not- axial, to make folds or a winding on itself of the link engage in the device)
  • the housing is substantially plane,
  • at least one of the main faces of the casing is curved concave for adaptation to the shoulder of the wearer of the harness,
  • the comfort box is slightly curved for adaptation to the shoulder of the wearer of the harness.

L'invention concerne ou présente également les caractéristiques suivantes :

  • un dispositif permettant de faire varier la distance entre les deux extrémités d'un lien tel que sangle ou câble, formant une boucle, en forme de cadre et comportant deux axes transversaux reliés à leurs extrémités audit cadre et sur lesquels ledit lien s'enroule successivement dans un parcours en forme de « S », tel que l'un au moins des deux axes est relié audit cadre par un moyen de rappel de façon à permettre à cet axe un déplacement dans la direction de l'axe longitudinal du lien, de façon automatique et permanente sous l'effet d'une traction exercée à l'une ou aux deux extrémités du lien,
  • un dispositif tel que le moyen de rappel entre l'axe mobile et le cadre est disposé de façon à travailler en compression,
  • un dispositif tel que le moyen de rappel entre l'axe mobile et le cadre est disposé de façon à travailler en extension,
  • un dispositif tel que le moyen de rappel reliant l'axe mobile au cadre est solidaire de l'une des extrémités longitudinales du cadre suivant l'axe du lien,
  • un dispositif tel que le moyen de rappel reliant l'axe mobile au cadre comprend deux parties respectivement solidaires des parties latérales du cadre,
  • un dispositif tel que les extrémités de l'axe mobile coulissent dans une lumière oblongue respectivement pratiquée dans chacune des deux parties latérales du cadre assurant une fonction de guidage de ces axes et de limite de leur course,
  • le moyen de rappel est constitué de matériau élastique,
  • le moyen de rappel est constitué de matériau à mémoire de forme,
  • le moyen de rappel est constitué de matériau à mémoire de dimension,
  • le moyen de rappel est constitué d'au moins un bloc de matériau élastique,
  • le moyen de rappel est constitué d'au moins un ressort,
  • un dispositif tel qu'il est disposé à l'extrémité du lien dont il relie cette extrémité à un moyen d'amarrage,
  • la boucle du dispositif est réalisée avec une sangle rigide formant partie d'un harnais, l'extensibilité, voir l'élasticité, apportée par le dispositif à boucle étant calculée de façon à assurer une aisance de mouvements à la personne portant le harnais par allongement de la distance comprise entre les deux extrémités de la sangle et ladite boucle étant disposée à l'endroit ou aux endroits adéquats pour cet effet,
  • la boucle est disposée sur une sangle élastique de façon à compléter l'élasticité de cette sangle,
  • les deux axes sont mobiles sous l'effet d'un moyen de rappel.
The invention also relates to or has the following features:
  • a device for varying the distance between the two ends of a link such as strap or cable, forming a loop, in the form of a frame and having two transverse axes connected at their ends to said frame and on which said link is wound successively in an "S" shaped path, such that at least one of the two axes is connected to said frame by a biasing means so as to allow this axis to move in the direction of the longitudinal axis of the link, automatically and permanently under the effect of traction exerted at one or both ends of the link,
  • a device such that the return means between the movable axis and the frame is arranged to work in compression,
  • a device such that the return means between the movable axis and the frame is arranged to work in extension,
  • a device such that the return means connecting the movable axis to the frame is integral with one of the longitudinal ends of the frame along the axis of the link,
  • a device such that the return means connecting the movable axis to the frame comprises two parts respectively integral with the lateral parts of the frame,
  • a device such that the ends of the movable axis slide in an oblong slot respectively formed in each of the two lateral parts of the frame ensuring a function of guiding these axes and limiting their stroke,
  • the return means is made of elastic material,
  • the return means is made of shape memory material,
  • the return means is made of dimension memory material,
  • the return means consists of at least one block of elastic material,
  • the return means consists of at least one spring,
  • a device such as it is arranged at the end of the link which connects this end to a mooring means,
  • the loop of the device is made with a rigid strap forming part of a harness, the extensibility, see the elasticity, provided by the loop device being calculated to ensure ease of movement to the person wearing the harness by lengthening the distance between the two ends of the strap and said loop being disposed at the place or places suitable for this purpose,
  • the buckle is arranged on an elastic strap so as to complete the elasticity of this strap,
  • both axes are movable under the effect of a return means.

L'invention s'applique en particulier à un harnais porté par un utilisateur, ledit harnais pouvant comporter des sangles, notamment bretelles, sur lesquelles des dispositifs d'ajustement sont placés. Les harnais sont des harnais classiques comme les harnais pour bébé, pour pilote d'avion ou bateau, pour conducteur automobile ou véhicule lourd, pour animaux, etc. ou des harnais de sécurité, en particulier anti-chutes. L'invention s'applique également à un lien relié à un utilisateur munit d'un harnais ou autre moyen de contention (par exemple lien type ligne de vie, laisse de chien...), un dispositif d'ajustement étant placé sur ledit lien.The invention applies in particular to a harness worn by a user, said harness may include straps, including straps, on which adjustment devices are placed. Harnesses are classic harnesses such as baby harnesses, for airplane or boat pilots, for motorists or heavy vehicles, for animals, etc. or safety harnesses, especially anti-falls. The invention also applies to a link connected to a user provided with a harness or other means of contention (for example a lifeline-type link, dog leash, etc.), an adjustment device being placed on said link.

L'invention concerne enfin un harnais à sangles, tel qu'au moins une des sangles comporte un dispositif d'ajustement de la longueur de lien selon l'une ou plusieurs des caractéristiques décrites, ledit dispositif étant dans un boîtier (le dispositif est dit « boîtier de confort »), et comportant des moyens pour réaliser au moins une boucle de sangle dont l'étendue peut varier en fonction de la traction sur la sangle, au moins un moyen de rappel tendant à augmenter l'étendue de ladite boucle jusqu'à un maximum prédéfini en l'absence de traction sur ladite sangle et ce qui correspond à une diminution de la longueur apparente de la sangle sur laquelle est placé le dispositif, la traction de la sangle entraînant une diminution de l'étendue de la boucle jusqu'à un minimum prédéfini et ce qui correspond à un allongement de la longueur apparente de la sangle sur laquelle est placé le dispositif.The invention finally relates to a strap harness, such that at least one of the straps comprises a link length adjustment device according to one or more of the features described, said device being in a housing (the device is said to "Comfort box"), and comprising means for producing at least one strap loop whose extent may vary depending on the traction on the strap, at least one biasing means tending to increase the extent of said loop up to to a predetermined maximum in the absence of traction on said strap and which corresponds to a decrease in the apparent length of the strap on which the device is placed, the traction of the strap resulting in a decrease in the extent of the loop to a predefined minimum and which corresponds to an extension of the apparent length of the strap on which the device is placed.

La présente invention, sans qu'elle en soit pour autant limitée, va maintenant être exemplifiée avec la description qui suit de modes de réalisation et de mise en oeuvre en relation avec :

  • la Figure 1 qui est une vue latérale et en coupe d'un premier exemple de boîtier de confort (boucle en S) pour une sangle au repos, ne subissant pas de traction,
  • la Figure 2 qui est une vue frontale d'un premier exemple de boîtier de confort pour une sangle au repos, ne subissant pas de traction,
  • la Figure 3 qui est une vue perspective en éclaté d'un premier exemple de boîtier de confort, sans sa sangle,
  • la Figure 4 qui est une vue latérale et en coupe d'un premier exemple de boîtier de confort pour une sangle subissant une traction,
  • la Figure 5 qui est une vue frontale d'un premier exemple de boîtier de confort pour une sangle subissant une traction,
  • la Figure 6 qui est une vue latérale et en coupe d'un deuxième exemple de boîtier de confort (boucle en oméga) pour une sangle au repos, ne subissant pas de traction,
  • la Figure 7 qui est une vue frontale d'un deuxième exemple de boîtier de confort pour une sangle au repos, ne subissant pas de traction,
  • la Figure 8 qui est une vue perspective en éclaté d'un deuxième exemple de boîtier de confort, sans sa sangle,
  • la Figure 9 qui est une vue latérale et en coupe d'un deuxième exemple de boîtier de confort pour une sangle subissant une traction,
  • la Figure 10 qui est une vue frontale d'un deuxième exemple de boîtier de confort pour une sangle subissant une traction,
  • la Figure 11 qui est une vue dorsale d'un harnais de sécurité comportant des boîtiers de confort sur ses sangles d'épaules dans leurs parties dorsales,
  • la Figure 12 qui est une vue frontale du harnais de sécurité de la Figure 11.
The present invention, without it being so limited, will now be exemplified with the following description of embodiments and implementation in relation to:
  • the Figure 1 which is a side view in section of a first example of a comfort case (S-loop) for a strap at rest, not undergoing traction,
  • the Figure 2 which is a front view of a first example of a comfort case for a strap at rest, not undergoing traction,
  • the Figure 3 which is an exploded perspective view of a first example of a comfort case, without its strap,
  • the Figure 4 which is a side and sectional view of a first example of a comfort case for a strap undergoing traction,
  • the Figure 5 which is a front view of a first example of a comfort case for a strap undergoing traction,
  • the Figure 6 which is a side view in section of a second example of a comfort case (omega loop) for a strap at rest, not undergoing traction,
  • the Figure 7 which is a front view of a second example of a comfort case for a strap at rest, not undergoing traction,
  • the Figure 8 which is an exploded perspective view of a second example of a comfort case, without its strap,
  • the Figure 9 which is a side view and in section of a second example of a comfort case for a strap undergoing traction,
  • the Figure 10 which is a front view of a second example of a comfort case for a strap undergoing traction,
  • the Figure 11 which is a dorsal view of a safety harness with comfort boxes on its shoulder straps in their dorsal parts,
  • the Figure 12 which is a frontal view of the safety harness of the Figure 11 .

Dans ces Figures, le boîtier de confort du premier exemple comporte intérieurement une boucle en S de la sangle et dans le deuxième exemple, une boucle en oméga. Sur les Figures 1, 2, 4-7, 9, 10, on a représenté des repères fixes (lignes noires) dans la sangle de part et d'autre du boîtier de confort afin de montrer l'effet d'une traction et d'un relâchement (repos/absence de traction) sur ladite sangle.In these figures, the comfort box of the first example internally comprises an S-loop of the strap and in the second example, an omega loop. On the Figures 1, 2 , 4-7, 9, 10 fixed markings (black lines) are shown in the strap on either side of the comfort box to show the effect of traction and relaxation (rest / absence of traction) on said strap.

Le boîtier de confort pour sangle de harnais qui va plus particulièrement être décrit en détail ci-après, apporte au moins une caractéristique d'allongement à la sangle qui l'utilise afin de garantir au porteur du harnais un certain confort d'utilisation.The comfort box for harness strap which will more particularly be described in detail below, provides at least one elongation feature to the strap that uses it to ensure the wearer of the harness comfort of use.

Le boîtier de confort peut être positionné sur les sangles de bretelles en vue de garantir une liberté de mouvement du haut du corps. Plus généralement, le boîtier de confort peut également être positionné à tout autre endroit sur une sangle de harnais susceptible d'améliorer le confort d'utilisation d'un harnais. Le boîtier de confort peut être placé en ligne sur une sangle de largeur donnée et aucune intervention dommageable n'est nécessaire pour placer le boîtier sur la sangle. En particulier, la sangle n'ayant pas besoin d'être sectionnée ou modifiée d'autre manière. La mise en place du boîtier de confort n'altère en rien la résistance mécanique d'origine de la sangle.The comfort box can be positioned on the straps straps to ensure freedom of movement of the upper body. More generally, the comfort box can also be positioned at any other place on a harness strap that can improve the comfort of use of a harness. The comfort box can be placed in line on a strap of a given width and no injurious intervention is necessary to place the case on the strap. In particular, the strap does not need to be cut or otherwise modified. The installation of the comfort box does not alter the original strength of the strap.

L'effet d'allongement apportée par la mise en oeuvre du boîtier de confort est obtenue par la combinaison d'une trajectoire de sangle liée au contournement d'axe(s) de déflexion mobile(s) et/ou fixe et d'une éventuelle plaque de réaction suivant la configuration de boucle adoptée (en S ou oméga) et sur le/lesquels axes de déflexion mobiles sont accrochés des ressorts qui, lors de la traction sur la sangle tendant à réduire l'étendue de la boucle, engendrent une réaction de rappel. Le boîtier en lui-même n'est là que pour maintenir l'ensemble des pièces en position et permettre le guidage puis le blocage de la translation du/des axe(s) de déflexion en fin de course.The elongation effect provided by the implementation of the comfort box is obtained by the combination of a strap trajectory related to bypassing the deflection axis (s). mobile (s) and / or fixed and a possible reaction plate according to the adopted loop configuration (S or omega) and on which mobile deflection axes are hooked springs which, when pulling on the strap tending to reduce the extent of the loop, give rise to a booster reaction. The housing itself is there only to maintain all the parts in position and allow guiding and then blocking the translation of the axis (s) of deflection at the end of the race.

Cet effet d'allongement apparent du lien/de la sangle est obtenu lors de la traction sur le lien/la sangle. Le boîtier de confort apporte en plus, de préférence, un effet de raccourcissement apparent (après l'allongement) du lien/de la sangle lorsque la traction cesse. Ces effets d'allongement et de raccourcissement apparents du lien/de la sangle s'apparentent à un effet global d'élasticité apparente du lien/de la sangle.This effect of apparent elongation of the link / strap is obtained during the pull on the link / the strap. The comfort box preferably additionally provides an apparent shortening effect (after the extension) of the link / strap when traction ceases. These apparent elongation and shortening effects of the tie / strap are similar to an overall apparent elasticity effect of the tie / strap.

Ainsi, le boîtier de confort se présente sous deux configurations particulières en fonction de la configuration de boucle adoptée : en S ou oméga.Thus, the comfort box comes in two particular configurations depending on the loop configuration adopted: S or omega.

Dans la configuration de boucle en S, un seul de deux axes de déflexion de sangle est mobile en translation. Le dispositif correspondant est représenté sur les Figures 1 à 5. Dans cette configuration, la sangle continue est passée dans le boîtier de confort et elle présente une partie amont 1 et une partie aval 2 par rapport au boîtier 3. Les qualificatifs amont et aval sont ici purement arbitraires et donnés pour faciliter les explications. La partie amont 1 de la sangle pénètre dans le boîtier à travers une extrémité d'entrée/sortie du boîtier, en l'espèce d'amont 9, et va s'enrouler sur environ un demi tour autour d'un l'axe de déflexion fixe 6 (non mobile en translation mais qui est, de préférence, mobile en rotation) après avoir traversé la plus grande partie du boîtier, puis, la sangle va s'enrouler à environ 180° autour d'un axe de déflexion 5 mobile en translation après être revenue vers l'extrémité d'entrée/sortie amont du boîtier, puis la sangle va ressortir par l'autre extrémité d'entrée/sortie du boîtier, en l'espèce d'aval 10, pour former la partie aval 2 de la sangle. Si, de préférence, l'axe de déflexion fixe 6 est mobile en rotation, cela peut également être le cas pour l'axe de déflexion mobile en translation 5.In the S-loop configuration, only one of two web deflection axes is movable in translation. The corresponding device is represented on the Figures 1 to 5 . In this configuration, the continuous strap is passed into the comfort housing and has an upstream portion 1 and a downstream portion 2 relative to the housing 3. The upstream and downstream qualifiers are here purely arbitrary and given for ease of explanation. The upstream portion 1 of the strap penetrates into the casing through an inlet / outlet end of the casing, in this case upstream 9, and will wrap about one-half turn around an axis of fixed deflection 6 (not mobile in translation but which is preferably rotatable) after passing through most of the housing, then, the strap will wrap around 180 ° about a movable deflection axis 5 in translation after having returned to the upstream input / output end of the housing, then the strap will emerge through the other input / output end of the housing, in this case downstream 10, to form the downstream part 2 of the strap. If, preferably, the fixed deflection axis 6 is rotatable, this can also be the case for the translational deflection axis 5.

Sur les Figures 1 et 2, aucune traction significative n'est imposée à la sangle entre ses parties amont et aval. Le dispositif est alors au repos et les deux axes de déflexion sont éloignés l'un de l'autre sous l'action de ressorts 7 agissant aux deux extrémités latérales de l'axe de déflexion 5 mobile en translation, ressorts tendant à tirer ledit axe 5 vers l'extrémité d'entrée/sortie amont 9 du boîtier pour que la boucle présente une étendue/extension maximale.On the Figures 1 and 2 , no significant traction is imposed on the strap between its upstream and downstream parts. The device is then at rest and the two deflection axes are separated from each other under the action of springs 7 acting at both lateral ends of the deflection axis 5 movable in translation, springs tending to pull said axis 5 to the upstream input / output end 9 of the housing so that the loop has a maximum extent / extension.

Sur les Figures 4 et 5, une traction est exercée sur les sangles entre leurs parties amont 1 et aval 2, par exemple parce que le porteur d'un harnais à sangles avec boîtier de confort effectue un mouvement. La sangle prend alors appuis sur l'axe de déflexion fixe 6 et par principe de « mouflage » déplace l'axe de déflexion mobile 5 en translation vers l'axe de déflexion fixe 6, en contrant l'action des ressorts 7, ce qui réduit l'étendue de la boucle et engendre donc un allongement apparent de la sangle (les repères de sangles sous forme de lignes noires s'éloignent l'un de l'autre). Lorsque la traction sur la sangle cesse, les ressorts 7 ramènent l'axe de déflexion mobile vers sa position initiale, ce qui entraîne une augmentation de l'étendue de la boucle et engendre donc un raccourcissement apparent de la sangle comme représenté Figures 1 et 2.On the Figures 4 and 5 , traction is exerted on the straps between their upstream parts 1 and downstream 2, for example because the wearer of a straps harness with comfort box makes a movement. The strap then bears on the fixed deflection axis 6 and in principle "hauling" moves the mobile deflection axis 5 in translation towards the fixed deflection axis 6, counteracting the action of the springs 7, which reduces the extent of the loop and thus causes an apparent lengthening of the strap (the markings of straps in the form of black lines move away from each other). When the traction on the strap ceases, the springs 7 return the movable deflection axis to its initial position, which causes an increase in the extent of the loop and therefore causes an apparent shortening of the strap as shown Figures 1 and 2 .

La Figure 3 permet de mieux voir la structure du boîtier de confort qui est réalisé en deux parties venant s'emboîter et s'encliqueter l'une dans l'autre et comportant intérieurement les axes de déflexions, fixe 6 et mobile en translation 5. Ce dernier axe 5 est guidé à ses deux extrémités dans des gorges (ou lumières) parallèles, une paire de gorges, de parois opposées du boîtier. Les ressorts 7 sont étendus entre des structures d'accrochage du boîtier et l'axe mobile en translation 5.The Figure 3 allows to better see the structure of the comfort housing which is made of two parts coming to fit and snap into each other and having internally the deflection axes, fixed 6 and movable in translation 5. This last axis 5 is guided at both ends in parallel grooves (or lumens), a pair of grooves, opposite walls of the housing. The springs 7 are extended between the attachment structures of the housing and the axially movable axis 5.

De préférence, la sangle présente une largeur sensiblement constante sur toute sa longueur afin notamment d'éviter d'éventuels problèmes de déviation, plis ou retournements de la sangle pouvant gêner le fonctionnement du boîtier de confort par exemple en cas de traction non axiale sur la sangle. Plus généralement, afin d'améliorer le guidage du lien aux entrées/sorties du boîtier et dans le boîtier, les orifices de passage du lien aux extrémités d'entrée/sortie sont ajustés à la taille (largeur et épaisseur pour une sangle et diamètre pour un câble) du lien et les axes de déflexion peuvent comporter des épaulements latéraux ou des gorges. A titre d'exemple, une sangle pour un harnais de sécurité présente une largeur d'environ 45 mm.Preferably, the strap has a substantially constant width over its entire length, in particular to avoid any problems of deflection, folds or reversals of the strap that may hinder the operation of the comfort housing for example in the case of non-axial traction on the strap. More generally, to improve the guide of the link to the inputs / outputs of the housing and in the housing, the passage openings of the link at the input / output ends are adjusted to the size (width and thickness for a strap and diameter for a cable) of the link and the deflection axes may comprise lateral shoulders or grooves. For example, a strap for a safety harness has a width of about 45 mm.

Dans la configuration de boucle en oméga, les deux axes de déflexion de sangle sont mobiles en translation. Le dispositif correspondant est représenté sur les Figures 6 à 10. Dans cette configuration, la sangle continue est passée dans le boîtier de confort et elle présente une partie amont 1 et une partie aval 2 par rapport au boîtier 3. Comme précédemment, les qualificatifs amont et aval sont ici purement arbitraires et donnés pour faciliter les explications. La partie amont 1 de la sangle pénètre dans le boîtier à travers une extrémité d'entrée/sortie du boîtier, en l'espèce d'amont 9, et va s'enrouler sur environ un demi tour autour d'un premier axe de déflexion mobile en translation 5, puis, la sangle va s'enrouler à environ 180° autour d'une première extrémité d'une plaque de réaction 8 puis aller s'enrouler à environ 180° autour de la seconde extrémité de ladite plaque de réaction 8 pour aller s'enrouler ensuite sur environ un demi tour autour d'un deuxième axe de déflexion 5' mobile en translation puis la sangle va ressortir par l'autre extrémité d'entrée/sortie du boîtier, en l'espèce d'aval 10, pour former la partie aval 2 de la sangle. Dans des variantes, le/les axes de déflexion mobiles en translation 5, 5' sont également mobiles en rotation.In the omega loop configuration, the two strap deflection axes are movable in translation. The corresponding device is represented on the Figures 6 to 10 . In this configuration, the continuous strap is passed into the comfort box and has an upstream portion 1 and a downstream portion 2 relative to the housing 3. As before, the qualifiers upstream and downstream are here purely arbitrary and given to facilitate explanations . The upstream portion 1 of the strap penetrates the housing through an inlet / outlet end of the housing, in this case upstream 9, and will wrap about a half turn around a first axis of deflection movable in translation 5, then, the strap will wrap about 180 ° around a first end of a reaction plate 8 and then wrap about 180 ° around the second end of said reaction plate 8 to then wrap around about a half turn around a second deflection axis 5 'movable in translation then the strap will emerge through the other end of the inlet / outlet of the housing, in this case downstream 10 , to form the downstream part 2 of the strap. In variants, the translationally movable deflection axes 5, 5 'are also rotatable.

On comprend bien que la fonction principale de la plaque d'appui 8 étant de procurer à ses deux extrémités des moyens de déflexion du chemin de la sangle, ladite plaque peut être remplacée par exemple par deux autres axes de déflexion dits d'oméga, fixes, disposés aux emplacements des extrémités de la plaque de réaction. Toutefois, la faible épaisseur de la plaque de réaction rend plus difficile la possibilité de coulissement de la sangle et donc les possibilités de déplacement du boîtier de confort le long de la sangle et on peut donc mettre en oeuvre une telle plaque de réaction si l'on souhaite rendre plus difficile le déplacement du boîtier de confort.It is well understood that the main function of the support plate 8 is to provide at both ends means for deflecting the path of the strap, said plate can be replaced for example by two other omega deflection axes, fixed , willing to locations of the ends of the reaction plate. However, the small thickness of the reaction plate makes it more difficult for the strap to slide and thus the possibilities of displacement of the comfort box along the strap, and it is therefore possible to use such a reaction plate if the it is desired to make it more difficult to move the comfort box.

De préférence, on met en oeuvre un moyen permettant d'immobiliser totalement ou dans une certaine limite le boîtier de confort par rapport à la sangle afin d'éviter qu'il ne se déplace (trop) et puisse finalement venir se positionner en des emplacements gênants pour le porteur du harnais.Preferably, a means is used to immobilize totally or to a certain extent the comfort box with respect to the strap to prevent it from moving (too much) and can finally be positioned in locations troublesome for the wearer of the harness.

Sur les Figures 6 et 7, aucune traction significative n'est imposée à la sangle entre ses parties amont 1 et aval 2. Le dispositif est alors au repos et les deux axes de déflexion sont rapprochés l'un de l'autre sous l'action de ressorts 7, deux en l'espèce, agissant entre les extrémités latérales des axes de déflexion 5, 5' mobiles en translation, ressorts tendant à rapprocher lesdits axes 5, 5' pour que la boucle présente une étendue/extension maximale.On the Figures 6 and 7 , no significant traction is imposed on the strap between its upstream 1 and downstream parts 2. The device is then at rest and the two deflection axes are brought closer to one another under the action of springs 7, two in this case, acting between the lateral ends of the deflection axes 5, 5 'movable in translation, springs tending to bring said axes 5, 5' so that the loop has a maximum extension / extension.

Sur les Figures 9 et 10, une traction est exercée sur les sangles entre leurs parties amont 1 et aval 2, par exemple parce que le porteur d'un harnais à sangles avec boîtier de confort effectue un mouvement. La sangle prend alors appuis sur la plaque de réaction 8 et par principe de « mouflage » déplace, en les écartant, les axes de déflexion mobiles 5 et 5' en translation en contrant l'action des ressorts 7, ce qui réduit l'étendue de la boucle et engendre donc un allongement apparent de la sangle (les repères de sangles sous forme de lignes noires s'éloignent l'un de l'autre). Lorsque la traction sur la sangle cesse, les ressorts ramènent les axes de déflexion mobiles vers leurs positions initiales, ce qui entraîne une augmentation de l'étendue de la boucle et engendre donc un raccourcissement apparent de la sangle comme représenté Figures 6 et 7.On the Figures 9 and 10 , traction is exerted on the straps between their upstream parts 1 and downstream 2, for example because the wearer of a straps harness with comfort box makes a movement. The strap then takes support on the reaction plate 8 and in principle "hauling" displaces, moving them apart, the mobile deflection axes 5 and 5 'in translation by counteracting the action of the springs 7, which reduces the extent of the buckle and thus causes an apparent lengthening of the strap (the marks of straps in the form of black lines move away from each other). When the traction on the strap ceases, the springs bring the movable deflection axes back to their initial positions, which leads to an increase in the extent of the loop and thus causes an apparent shortening of the strap as shown Figures 6 and 7 .

Comme on l'a vu, le boîtier est typiquement constitué de deux coques assemblées ensemble. De préférence, une des coques forme la plus grande partie du boîtier 3 et l'autre coque forme alors un couvercle 4. La structure du boîtier avec boucle en oméga est mieux visible sur la Figure 8 avec ses deux parties venant s'emboîter et s'encliqueter l'une dans l'autre et comportant intérieurement les axes de déflexions mobiles en translation 5 et 5' ainsi que la plaque de réaction 8. Les axes de déflexions 5 et 5' mobiles en translation sont guidés à leurs deux extrémités dans deux paires de gorges parallèles entre elles dans des parois opposées du boîtier. Les ressorts 7 sont étendus entre les axes de déflexions mobiles en translation 5 et 5'.As we have seen, the housing is typically made of two shells assembled together. Preferably, one of the shells forms the greater part of the housing 3 and the other shell then forms a cover 4. The structure of the housing with omega loop is better visible on the Figure 8 with its two parts coming to fit and snap into each other and internally with the axes of translational deflections in translation 5 and 5 'and the reaction plate 8. The deflection axes 5 and 5' movable in translation are guided at both ends in two pairs of grooves parallel to each other in opposite walls of the housing. The springs 7 are extended between the deflection axes movable in translation 5 and 5 '.

Dans les exemples présentés, le lien considéré qui est une sangle en l'espèce, sort de chaque coté du dispositif. Dans une variante, une extrémité du lien peut être fixée au dispositif et le dispositif comporter un moyen d'accrochage spécifique (crochet, patte de scellement, patte à visser, mousqueton...) permettant d'exercer ainsi une traction sur le lien. D'autre part, on a mentionné un état de repos du dispositif comme correspondant à une étendue de boucle maximale en l'absence de traction sur le lien. On comprend cependant que dans certaines applications le lien soit normalement en tension (l'étendue de la boucle est alors réduite) et que le dispositif sert alors à compenser (réduire la longueur apparente du lien) une baisse de la tension du lien. Dans d'autres applications, la tension sur le lien est normalement telle que l'étendue de la boucle est entre le minimum et le maximum d'étendue de la boucle, et il est alors possible de compenser dans les deux sens la longueur apparente du lien selon que la tension est augmentée ou réduite. De plus, les axes de déflexions, fixes (dont d'oméga) ou mobiles, peuvent être ou non mobiles en rotation selon la modalité de réalisation. De préférence, le boîtier ne comporte pas d'arrête vive extérieurement car il est au contact de l'utilisateur.In the examples presented, the considered link which is a strap in this case, goes out on each side of the device. In a variant, one end of the link may be fixed to the device and the device may include a specific attachment means (hook, sealing lug, screw-on lug, carabiner ...) thereby making it possible to exert traction on the link. On the other hand, a state of rest of the device has been mentioned as corresponding to a loop range maximum in the absence of traction on the link. It is understood, however, that in some applications the link is normally in tension (the extent of the loop is then reduced) and that the device then serves to compensate (reduce the apparent length of the link) a decrease in the link voltage. In other applications, the tension on the link is normally such that the extent of the loop is between the minimum and maximum extent of the loop, and it is then possible to compensate in both directions for the apparent length of the loop. link depending on whether the voltage is increased or reduced. In addition, the deflection axes, fixed (including omega) or mobile, may or may not rotate in the embodiment according to the embodiment. Preferably, the housing does not have a sharp edge externally because it is in contact with the user.

Une application du boîtier de confort à un harnais de sécurité anti-chute est représentée sur les Figures 11 et 12. Dans cette application, un boîtier de confort est disposé sur chacune des sangles de bretelles du harnais, dans le dos de l'utilisateur. De préférence, on met en oeuvre un moyen d'immobilisation du boîtier de confort le long de la sangle afin que cette dernière ne se déplace pas (trop) le long de la sangle lors de l'utilisation du harnais. Les sangles du harnais sont de préférence inextensibles (dans une matière non élastique) dans cette application et le boîtier de confort apporte une élasticité apparente aux sangles de bretelles.An application of the comfort box to an anti-fall safety harness is shown on the Figures 11 and 12 . In this application, a comfort box is disposed on each of the straps harness straps, in the back of the user. Preferably, it implements a means of immobilization of the comfort box along the strap so that the latter does not move (too much) along the strap during use of the harness. The straps of the harness are preferably inextensible (in a non-elastic material) in this application and the comfort box provides an apparent elasticity to the shoulder straps.

Claims (10)

  1. A device for adjusting the length of a flexible link (1, 2) according to the pulling force exerted on said link, said continuous link passing through the device between two substantially opposite input/output ends of said device,
    the device including means for producing at least on link loop whose extent can vary according to the pulling force and at least one return means (7) tending to increase the extent of said loop up to a predefined maximum in the absence of pulling force on said link, which corresponds to a reduction of the apparent length of the link on which the device is the pulling force of the link resulting in a reduction of the extent of the loop up to a predefined minimum, which corresponds to an elongation of the apparent length of the link on which the device is placed, characterized in that the device is reversible, the cessation of the pulling force returning the extent of said loop to the predefined maximum, said loop being substantially flat and extending in a substantially extended plane between the two input/output ends of the device, and in that it includes, for each loop, at least two link deflection axes, at least one of the axes being mobile in translation and being functionally attached to said at least one return means, said axes moving apart or together to vary the extent of the loop.
  2. The device as claimed in claim 1, characterized in that the return means is a spring and the spring works by extension: the pulling force of the link which results in a reduction of the extent of the loop causing an extension of the spring.
  3. The device as claimed in claim 1 or 2, characterized in that the link is chosen from cylindrical links or flat links.
  4. The device as claimed in claim 1, 2 or 3, characterized in that it includes an S loop, a first deflection axis (6) of the link being immobilized in translation and a second deflection axis (5) being mobile in translation and functionally attached to said at least one return means (7), the return mean(s) acting between one or more fixed points of the device and the second deflection axis.
  5. The device as claimed in claim 1, 2 or 3, characterized in that it includes an omega loop, a first deflection axis (5) of the link being mobile in translation and functionally attached to a first of said at least one return means, and a second deflection axis (5') being mobile in translation and functionally attached to a second of said at least one return means,
    and in that, in the case where the first and the second at least one return means are independent, said return means act respectively between one or more fixed points of the device and their corresponding deflection axis
    and in that, in the case where the first and the second at least one return means are at least one and the same return means, said return mean(s) act between the first and second deflection axes.
  6. The device as claimed in claim 5, characterized in that it also includes a reaction plate or two fixed omega deflection axes.
  7. The device as claimed in any one of the preceding claims, characterized in that it includes two parallel and opposite translation paths for each deflection axis mobile in translation, said translation paths receiving the two opposite ends of the deflection axis in order to allow mobility with translational guidance of said deflection axis.
  8. The device as claimed in any one of the preceding claims, characterized in that it is in a substantially flat unit, the loop being arranged inside said unit.
  9. The device as claimed in claim 8, characterized in that the unit consists of two shells joined together, each of the shells forming one of the two main faces of said unit.
  10. A strap harness, characterized in that at least one of the straps includes a device for adjusting the link length according to at least claim 3 of the preceding claims, said device being in a unit and including means for producing at least one strap loop whose extent can vary according to the pulling force on the strap, at least one return means (7) tending to increase the extent of said loop up to a predefined maximum in the absence of pulling force on said strap and which corresponds to a reduction of the apparent length of the strap on which the device is placed, the pulling force of the strap resulting in a reduction of the extent of the loop up to a predefined minimum and which corresponds to an elongation of the apparent length of the strap on which the device is placed.
EP10709912A 2009-02-27 2010-02-25 Device for adjusting the length of a flexible link and use thereof in a comfort housing for a harness strap Active EP2401040B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951280A FR2942621B1 (en) 2009-02-27 2009-02-27 DEVICE FOR ADJUSTING THE LENGTH OF A FLEXIBLE LINK, APPLICATION TO A COMFORT CASE FOR A HARNESS STRAP.
PCT/FR2010/050333 WO2010097555A1 (en) 2009-02-27 2010-02-25 Device for adjusting the length of a flexible link and use thereof in a comfort housing for a harness strap

Publications (2)

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EP2401040A1 EP2401040A1 (en) 2012-01-04
EP2401040B1 true EP2401040B1 (en) 2013-01-09

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EP10709912A Active EP2401040B1 (en) 2009-02-27 2010-02-25 Device for adjusting the length of a flexible link and use thereof in a comfort housing for a harness strap

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US (1) US9067088B2 (en)
EP (1) EP2401040B1 (en)
CN (1) CN102405081B (en)
CA (1) CA2753755C (en)
ES (1) ES2403738T3 (en)
FR (1) FR2942621B1 (en)
RU (1) RU2506976C2 (en)
WO (1) WO2010097555A1 (en)

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USD669233S1 (en) * 2009-11-30 2012-10-16 Audrey Jane Ranstead Hands-free leash
US10016002B2 (en) 2013-02-26 2018-07-10 Hyprum Llc Garments having evacuation harnesses and methods of using the same
US9498008B2 (en) * 2013-02-26 2016-11-22 Hyprum Llc Garments having an evacuation harness and methods of using the same
US9643054B2 (en) 2013-05-06 2017-05-09 Michael Allen Frankhauser Knee ascender assembly for rope climbing
WO2014182721A1 (en) * 2013-05-06 2014-11-13 Woods-To-Woods, Llc Knee ascender assembly for rope climbing
US9802067B2 (en) * 2015-02-18 2017-10-31 Skysaver Rescue Ltd. Harness configurations for a suspension device
US9993048B2 (en) 2015-06-10 2018-06-12 D B Industries, Llc Safety harness connector assembly
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US12233294B2 (en) * 2020-09-25 2025-02-25 Werner Co. Harness adjustment device

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US9067088B2 (en) 2015-06-30
CA2753755A1 (en) 2010-09-02
FR2942621A1 (en) 2010-09-03
RU2011139284A (en) 2013-04-10
CA2753755C (en) 2016-12-13
US20110302688A1 (en) 2011-12-15
RU2506976C2 (en) 2014-02-20
EP2401040A1 (en) 2012-01-04
CN102405081A (en) 2012-04-04
WO2010097555A1 (en) 2010-09-02
FR2942621B1 (en) 2015-02-20
ES2403738T3 (en) 2013-05-21
CN102405081B (en) 2013-05-22

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